本标准规定了输变电状态监测主站系统接入各类变电设备状态监测数据的统一通信协议，包括主站系统与变电站内状态接入控制器（CAC）之间的通信交互过程、通信双方提供的服务方法等方面的内容。-This standard specifies the unified power transmission condition monitoring master system to access various types of substation equipment condition monitoring data communication protocols, including the state master system and substation access controller (CAC) between communication interaction, communication the content of the services provided by the two sides.